Judging distance without using accessories, such as range finders, is a matter of vision, preference, and practice.

An Oregon study showed that adult hunters, especially men, suffered from a high percentage of vision problems, ranging from color blindness to visual acuity. These conditions affect a hunter's ability to judge distances and can hamper the performance of other hunting techniques, such as following a blood trail.

Be sure to have your vision checked and corrected to prevent problems in the field.

A responsible bowhunter learns to correctly judge distances to a variety of game animals correctly to within 90 to 95 percent of the actual distance.